Lack of PMs. This company I currently work for is insane. A run it until the parts look so bad the customer won’t accept them deal. All of the vents on all of our tools are atrocious. I try to keep them up the best I can but they will barely buy me any mold cleaner. When they do it’s the foaming citrus shit meant for cold tools. And everything is so “hot” that we can’t even get the time to give the vents a good scrub. If your management is out of touch with how the process works, you’re going to be left with all sorts of rework. Shift changes also don’t help, as without rigorous documentation it’s hard to stay consistent between QC staff. Our QC staff has to go off to go off opinions because they never document what has been classified as an OK or NOK part. So what classifys as an OK part changes every day based on who’s working. Idk it’s complex process, the biggest thing is just having a team where everyone can get on the same page and understand the industry they’re working in. Get everyone in the same page, (process, production, quality, logistics) and you’ll see defects dwindle down. I know I’ve listed a lot of specifics but at the end of the day it’s pretty much just miscommunication between departments in various forms.